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Thread: Dual Exhaust Conversion

  1. #1
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    Question Dual Exhaust Conversion

    In the not-so-distant future, I am going to install a dual exhaust on my '05 MGM. I will be cutting off the dual exhaust of a junkyard car and pattern a 2.5" exhaust from it. I know there is a dual exhaust kit from Stainless Systems, but I want my exhaust quiet; with cutouts for those summer days in traffic when I need waking up. I will be installing headers maybe next year. I also know from experience that it's easier to install a full exhaust all at once (easier to lay it all out and fit everything together). My budget is making me do this backwards; so the exhaust will be done first; headers later. With that said, I have one question; what role do those weights on the stock exhaust flanges play? When I do the full exhaust, should I weld those weights onto the new flanges? Kinda silly question, but I figured that they are there for a reason.

  2. #2
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    they are there to minimize drone.
    "X" car 89 Colony Park LS Mods>Engine delete, SS duals magnaflow hflow cats, 2010 Must GT mufflers, auto air shocks, Posi, Tran cooler, big front brakes, 03+ rear disks, Large 3g alt, Tripminder, GS grill, 86 seats, 16" HPP wheels, winter boots=96 Cartier wheels, 215-65/16 Goodyear ULTRA GW3 snows, pi rear sway, alum driveshaft.
    03 Marauder DPB, HS, 6disk, Organizer, Silver Stars, M&Z rear control arms, Oil deflector.
    02 SL500 Silver Arrow
    08 TC Signature Limited, HID's Mods>235/55-17 Z rated Cooper Zeon RS3-A, Addco 1" rear Sway, Posi, Compustar Remote Start, floor liners, trunk organizer, Winter=05 Mustang GT rims, Nokian Hakkapeliitta R-2 235/55-17

  3. #3
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    Be sure to grab muffler and tail pipe hangers from a donor car.

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    Okay. Thanks for the fast response Jaywish Wish my coworkers were that fast :-/

    I am going to install Dynomax 17748 muffs with some resonated exhaust tips that I got back in the '90s. Hopefully it will be quiet with relatively little drone.

  5. #5
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    JBTW 2.5" might be a bit of overkill. 2.25" if available might be a bit cheaper and easier to work with while providing a great improvement over the stock single and stock duals as well
    "X" car 89 Colony Park LS Mods>Engine delete, SS duals magnaflow hflow cats, 2010 Must GT mufflers, auto air shocks, Posi, Tran cooler, big front brakes, 03+ rear disks, Large 3g alt, Tripminder, GS grill, 86 seats, 16" HPP wheels, winter boots=96 Cartier wheels, 215-65/16 Goodyear ULTRA GW3 snows, pi rear sway, alum driveshaft.
    03 Marauder DPB, HS, 6disk, Organizer, Silver Stars, M&Z rear control arms, Oil deflector.
    02 SL500 Silver Arrow
    08 TC Signature Limited, HID's Mods>235/55-17 Z rated Cooper Zeon RS3-A, Addco 1" rear Sway, Posi, Compustar Remote Start, floor liners, trunk organizer, Winter=05 Mustang GT rims, Nokian Hakkapeliitta R-2 235/55-17

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